Temporary binder.



.1. J., DUFFY.

TEMPORARY BINDER. (Appuvcaeionmea Jan. 29, 1902.)

1H: Nonms PETERS co. PHoTauTHmwAsHmorcN, D, u.

UNITED STATES 'PATENT OFFICE.

JOHN J.. DUFFY, OF WASHINGTON, DISTRICT OF COLUMBIA.

TEM PoRAjFY BIN DER.

SPECIFICATION forming'rpart of LettersAlPatentNo. 711,656, dated October21, 1902.

Application filed January 29,1902. Serial No. 91,765. (No model.)

To all'whom it may concern:

Be it known that I, JOHN J; DUFFY, a citizen of the United States,residing at Washington in the District of Columbia, have inventedcertain new and useful Improvements in Temporary Binders; and Ido'hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to bookbinding, but more particularly to the classof temporary binders, and has for its object to provide a device of thisclass which is simple inlconstruction, easy and positive of operation,and` wardly-visible parts--such as nuts,pins,&c.-V

which must necessarily interfere with a compact racking of the books.

A further object of my invention is to provide a temporary binder whichis so arranged that when the book is entirely full there will be nobulging, as is generally the case when leaves are pasted to stubs.

With these objects in View my invention consists in the novelarrangement and construction of my stub-securing pins, in combinationwith my sliding strip and hollow casing.

My invention also consists in the particular construction of my stubsand central stubseparator.

My invention further consists in certain other novel features ofconstruction and in combination of parts, which will be rst fullydescribed and afterward specifically pointed out in the appended claims.

Referring to the accompanying drawings, Figure 1 is a cross-section of atemporary binder constructed in vaccordance with my invention. Fig. 2 isa vertical section taken on the lines 2 2 of Fig. 1. Fig. 3 is aperspective view of a portion of my locking-strip. Fig. 4 is aperspective of a portion of my hollow casing. Fig. 5 is a fragmentaryperspective of a pair of my stubs. Fig. 6 is a fragmentary perspectiveof one of my stub-separators.

Like numerals of reference indicate the same parts throughout theseveral figures, in which-- 1 is a book having the ordinary cover 2,which is covered inside and out with heavy duck, leather, or othersuitable material.

3 indicates the hack, which is preferably hat and constructed so that itwill accommodate itself to a thick or a thin book.

4 indicates my hollow casing, which is constructed of suitable metal andwhich is incased between the outside and inside covering of thebook-cover, as shown in Fig. 1, and it will be noticed by referring toFig. l that the bending-point of the cover isin front of said hollowcasing. I provide the said casL ing with two circular holes 6 near theends thereof and also cut away a portion 7 of the inner side of saidcasing at the top thereof. If also provide a tang 8 in the inner side ofsaid casing about the central point thereof for a purpose which will behereinafter fully described. e

9 indicates my stub-securing pins, which are provided at each end withanv annular groove 10, said pins being adapted to enter the circularholes 6 in the hollow casing 4.

11 indicates my locking-strip,constructed of suitable metal, which isadapted to enter the hollow casing 4E and which is provided with twoelongated slots 12, (only one shown,) one half of which is considerablyWider than the other, the narrow portions of said slots tapering towardtheir outer ends, as will be fully described. I also provide a smallslot 13 about midway of the locking-strip and a tang 8 on the inner sideof the hollow casing, which enters said slotand limits the slide of thelocking-strip.

The top ends of the `lockin, ;strips 11 are bent inwardly at 14 andoperate in the cutout portions 7 at the tops of` the hollow casings.These bent portions of the lockingstrips lie flat on the stubs of thebook and J furnish a means for grasping the locking-strip to operate thesame.

15 indicates my stubs, and in Figs. 1 and 5 the construction is fullyshown. I always IOO for the thickness of the sheets that are pasted tothe stubs. Without these separators the book would become thicker at thefront than at the back, which would interfere with a compact racking ofthe book.

I provide the holes 17 in the stubs l5 elongated, for the reason thatafter the stub-separators are in place and sheets pasted to the stubsthey do not set on the stub-securing pins at exactly right anglesthereto, but obliquely. Consequently were the holes therein circularthey would bind on the securing-pins and tear or otherwise prevent aspeedy detachment or attachment on or o of the stubsecuring pins.

Having thus described my invention, its operation is as follows: Thestub-securing pins are inserted in the circular openings in the hollowcasings after the locking-slides have been raised up by grasping thebent ends thereof. The ends of the stub-securing pins pass, therefore,through the widened portion of the elongated slots in saidlocking-strips. When the pins are in this position, the locking-stripsare pressed down, causing the narrow portions of the elongated slots inthe locking-strips to engage and enter the annular grooves near the endsof the stub-securing pins, the tapered form of the elongated slotcausing the edges of said slot to grip or bind with the stub-securingpins within the annular grooves, and the firmer the locking-strips arepressed the greater the locking-strips grip the securing-pins, whichholds said strips and locking-pins rmly in position and precludes thelocking-strips from workin g up and disengaging the securing-pins. Thisconstruction is not necessary, although I prefer it. Neverthelessl donot wish to be understood as limting myself to the exact construction inthis regard, nor to the other points described, as various slightchanges may be made therein by those skilled in the art which would fallwithin the limit and scope of my invention, and I consider myselfclearly entitled to all such changes and modifications.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

l. In a temporary binder, the combination with the inside and outsidecover, of a hollow casing interposed between said covers, openings insaid casing, securing-pins provided with grooves near the ends thereof,and adapted to enter said hollow casing, and a lockingstripwithin saidhollow casing provided with elongated slots, a portion of said slotsbeing narrower than the other and tapered so as to grip thesecuring-pins, substantially as described.

2. In a temporary binder the combination with` the insideand outsidecover of a hollow casing interposed between said covers and formingapart of the back of the binder, openings in said casing, securing-pinsadapted to enter said openings, a locking-strip within said hollowcasing provided with elongated slots, a portion of said slots beingnarrowed and tapered so as to straddle the securingpins and securelygrip the same.

In testimony whereof I affix my signature in presence of two witnesses.

JOIIN J. DUFFY.

Witnesses:

WM. I. EVANS, C. HUGH DUFFY.

Y f I I I

